<template>
  <view>
    <view class="goods-item">
      <!-- 商品左侧图片区域 -->
      <view class="goods-item-left">
        <radio :checked="goods.goods_state === true" color="#C00000" v-if="showRadio" @click="radioClickHandler" />
        <image :src="goods.goods_small_logo" class="goods-pic"></image>
      </view>
      <!-- 商品右侧信息区域 -->
      <view class="goods-item-right">
        <!-- 商品标题 -->
        <view class="goods-item-name">{{ goods.goods_name }}</view>
        <view class="goods-info-box">
          <!-- 商品价格 -->
          <view class="goods-price">￥{{ goods.goods_price | tofixed }}</view>
          <!-- 商品数量 -->
          <uni-number-box :min="1" :value="goods.goods_count" v-if="showNumber" @change="numChangeHandler"></uni-number-box>
        </view>
      </view>
    </view>
  </view>
</template>

<script>
export default {
  name: 'my-goods',
  props: {
    goods: {
      type: Object,
      required: true
    },
    // 是否展示图片左侧的 radio
    showRadio: {
      type: Boolean,
      // 如果外界没有指定 show-radio 属性的值，则默认不展示 radio 组件
      default: false
    },
    showNumber:{
      type:Boolean,
      default:false
    }
  },
  filters: {
    tofixed(num) {
      return Number(num).toFixed(2);
    }
  },
  data() {
    return {};
  },
  methods: {
    // radio 组件的点击事件处理函数
    radioClickHandler(e) {
      // 通过 this.$emit() 触发外界通过 @ 绑定的 radio-change 事件，
      // 同时把商品的 Id 和 勾选状态 作为参数传递给 radio-change 事件处理函数
      this.$emit('radio-change', {
        // 商品的 Id
        goods_id: this.goods.goods_id,
        // 商品最新的勾选状态
        goods_state: !this.goods.goods_state
      });
    },
    numChangeHandler(value){
      this.$emit('num-change',{
        goods_id:this.goods.goods_id,
        goods_count:value
      })
    }
  }
};
</script>

<style lang="scss">
.goods-item {
  display: flex;
  padding: 10px 5px;
  border-bottom: 1px solid #f0f0f0;
  .goods-item-left {
    margin-right: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    .goods-pic {
      width: 100px;
      height: 100px;
      display: block;
    }
  }
  .goods-item-right {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    flex: 1;
    .goods-name {
      font-size: 13px;
    }
    .goods-price {
      font-size: 16px;
      color: #c00000;
    }
  }
}
.goods-info-box{
  display: flex;
  justify-content: space-between;
  align-items: center;
}
</style>
